Very healthy for my age. I probably eat in too many restaurants and drink too much wine, but I do try to eat healthily. I can't be bothered getting ill - life's too good.

Ever spent a night in hospital?

Yes, when I snapped the ligaments in my right leg. I'd been skiing off-piste and some snow had compacted at the back of my skis. I hit a bump and the ski didn't come off. When the ligament snaps the pain goes away, so you think there's nothing wrong with you, then you stand up and your leg collapses. It took one and a half hours to bring me down the mountain in one of those body bags and then I had to wait two days before I could be flown back to Britain, where I was taken straight to hospital and operated on.

Do you worry about your weight?

I look after it and train if I'm getting too heavy. When I'm filming Dragons' Den I have my personal trainer come on set during our lunch break, so I train for an hour, get showered, get changed and have mylunch in the last 10 minutes. It's not about being on television, it's much more about me - it never bothered Robbie Coltrane that he's a big lad and he gets on television.

How much do you drink?

Too much. I can drink a bottle of wine an evening very, very easily, especially when the sun's shining and you're sat outside. We had some friends over for dinner last night - there were six of us, and I noticed that there were six empty bottles this morning. I started drinking when I was in the Royal Navy, so I must've been 17. I was based in Plymouth and we drank a lot of apple cider.

Attitude to smoking?

I smoked in the Royal Navy and carried on until I was 29 as a force of habit. Cigarettes were cheap, so I smoked 20 to 30 a day. When you meet the directors of tobacco companies and you see the way they sell the cigarettes, it's abominable - they're the most disgusting people in the world, as far as I'm concerned.

Are you happy?

I'm so happy it's unbelievable. I'm very, very fulfilled. I have a great family, a great business. Having a television career, being able to write books and sell books - all those things add to it.

How do you feel about cosmetic surgery?

If you need it, do it, it's great. My eyes looked a bit like John Prescott's, so I've had them done twice.